'It was Wolfenstein Classic that made the argument for iPhone development for me.
Doom Resurrection, when it hit, was probably the most expensive game to develop for the iPhone, Carmack says. 'Carmack said that there was a lot of 'hand wringing' initially over the idea of spending the company's own money (there was no publisher to help fund development) on making games for the iPhone. That is also why one of the most famous game programmers, John Carmack, just recently rewrote some of his games for iPhone/ipod touch and made quite a nice profit from his own account. You have to remember everything is drive by economics in our capitalistic society so games are written for the OS that has largest market penetration and most likely to return huge profit and currently that is Windows.